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passive restraint

American  
[pas-iv ri-streynt] / ˈpæs ɪv rɪˈstreɪnt /

noun

  1. a safety device in a motor vehicle, as an airbag or special seat belt, that is activated automatically to protect the seat occupant at the moment of impact when a collision occurs.

Etymology

Origin of passive restraint

First recorded in 1965–70

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.